the thing is, subscribing to a comic youre not reading or engaging with is actually a lot meaner to the creator than unsubscribing. dead weight subscribers keep comics from getting into trending bc of how the algorithm is calculated. so if you care about a creator but not for their work, the kindest thing you can do is unsub. you dont need to say anything to the person, just click the button.
also, comics are to be enjoyed! if youre not enjoying yourself, theres never any shame in ducking out and finding something you do enjoy